<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Title</title>
</head>
<body>
<div id="app">
<!--  1.在遍历的过程中，没有使用索引值-->
  <ul>
    <li v-for="item in names">{{item}}</li>
  </ul>
<!--  2.在遍历过程中，获取索引值-->
  <ul>
    <li v-for="(item,index) in names">{{index+1}}.{{item}}</li></ul>
</div>
  <script src="../js/vue.js"></script>
  <script>
    const app = new Vue({
      el:'#app',
      data:{
        message:"你好啊！！",
        names:['why','where','when']
      }
    })
  </script>
</body>
</html>